Great info, thanks! So my next question (again, pardon the thread jacking) is what kind of replacement schedule are you committing to with copper plugs? Yearly?
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Great info, thanks! So my next question (again, pardon the thread jacking) is what kind of replacement schedule are you committing to with copper plugs? Yearly?
I've seen anything from 10k miles to 30k miles. I would probably stick with 25-30k unless I noticed a decrease in performance (then change sooner). My guess is that these things start getting pretty worn out past 30k - they're less durable than the expensive plugs, and besides, by 30k, they'll probably start going out of gap. I mean they're fairly soft copper just hanging out in a chamber full of explosions for like two years. I wouldn't bother re-gapping when you can get a new set for $12, and you're going to have to take them out anyway.
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